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Olympia Nominee Trust to Continue the Cleanup of Contaminated Soil at Wells G & H Superfund Site

Release Date: 06/21/04
Contact Information: Contact: Alice Kaufman, EPA Community Involvement Office, (617) 918-1064

For Immediate Release: June 21, 2004; Release # 04-06-23

Boston - The US EPA has reached an agreement with Olympia Nominee Trust to continue the cleanup of contaminated soils on the Olympia property located at 60 Olympia Avenue in Woburn, Massachusetts. This is one of five properties identified in the early 1980's as a source of groundwater contamination to Wells G & H aquifer in Woburn. The cleanup at the Olympia property is another step in the Superfund cleanup at the Wells G&H Site.

Extensive sampling and analysis of soil and groundwater by EPA in 2002 on the Olympia property revealed surface soils contaminated with polychlorinated biphenyls (PCBs). Sub-surface soils are contaminated with trichloroethylene (TCE). EPA believes that this area serves as an ongoing source of contamination to the groundwater and to the Aberjona River that flows through the property.

EPA will oversee the work outlined in the agreement, called an Administrative Order on Consent, or AOC, which is expected to take approximately one to two years. Under the agreement, Olympia Nominee Trust will:

    1. Conduct additional sampling to further define the extent of subsurface contamination, as necessary, monitor progress of treatment, and document successful cleanup;
    2. Treat TCE contaminated subsurface soils in place by injecting sodium permanganate, a material which destroys TCE by chemical reaction; and
    3. Re-vegetate and grade the site.
EPA and Olympia Nominee Trust reached a similar agreement last spring. Under this first agreement, Olympia Nominee Trust excavated and disposed of 56 cubic yards of PCB-contaminated surface soils, evaluated various options for addressing the TCE-contaminated soils, and prepared a detailed work plan for cleaning up the TCE by way of sodium permanganate injection treatment, as described above. This phase of the work is estimated to cost about $1.1 million.

The Wells G & H site, which was listed on the National Priorities List (NPL) in 1982, covers approximately 330 acres. The site includes the aquifer and land mass area located within the zone of contribution to the city of Woburn's former two municipal drinking water wells known as Wells G & H. EPA reached earlier settlements with W.R. Grace, Unifirst Corp., Wildwood Conservation Trust, and New England Plastics to cleanup contamination to the site. To date, these cleanup activities have resulted in the treatment of more than 200 million gallons of groundwater and the removal of over 4000 pounds of volatile organic compounds from the groundwater. In addition, abandoned drums were removed from the Olympia property in the 1980's.

For more information about the Wells G & H Superfund site cleanup, visit EPA's website: Additional information on the cleanup of the Olympia property, can be found at:

Related Information:
Wells G & H Fact Sheet
Long-Term Cleanups